This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Experimental Study of Heat Transfer from the Heated Rib-Roughed Wall to a Steady or Pulsating Flow
Technical Paper
2001-01-1249
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
The heat exchanger performance is mostly limited by the poor gas side heat transfer. This motivates attempts to increase the effectiveness of gas side heat transfer processes in numerous types of heat exchangers in automotive industry mostly used for cooling. The efficiency of compact heat exchangers can be improved by means of boundary layer modification. The objective of this reported work is to study the mechanism of convective heat transfer from the heated wall of a duct to a flow of air. The surface of the heated wall is flat or rib-roughened. Rib-roughened surfaces are used to induce turbulence and to enhance the heat transfer. Interferometer, schlieren and PIV methods assisted by high-speed video camera are used to study the mechanism of heat transfer from the heated wall to the flow. These methods are accompanied by measurements of the flow velocity, instant temperature, turbulence and frequency analysis of turbulence parameters. The range of Reynolds numbers studied was from 1000 to 12000. Finally the influence of a steady, oscillatory and pulsating flow on the heat transfer is investigated and compared. The low frequency oscillations from 0.083 to 0.25 Hz are applied in experiments to be comparable with frequencies used in literature. Frequencies of the pulsating flow are used in the range from 0.2 to 5 Hz. The results are presented in a form of a time-averaged Nusselt number as a function of a Reynolds number calculated on the basis of the oscillatory and pulsating flow parameters. It is found that turbulence promoters on the heated wall enhance heat transfer, while low frequency pulsation of the mean flow deteriorates it. Both effects are explained by the processes in the boundary layer sticking to the heated wall of the investigated channel.
Recommended Content
Citation
Jarosinski, W., "Experimental Study of Heat Transfer from the Heated Rib-Roughed Wall to a Steady or Pulsating Flow," SAE Technical Paper 2001-01-1249, 2001, https://doi.org/10.4271/2001-01-1249.Also In
References
- Williams F. Watts I. The Development of Rough Surfaces with Improved Heat Transfer Performance and a Study of the Mechanism Involved Proceedings of the 4 th International Heat Transfer Conference Paris 1 11 1970
- Goldstein J. L. Sparrow E. M. Heat and Mass Transfer Characteristics for Flow in a Corrugated Wall Channel J. Heat Transfer 99 187 195 1977
- Sparrow E. M. Prata A. T. Numerical Solutions for Laminar Flows and Heat Transfer in a Periodically Converging-Diverging Tube, with Experimental Confirmation Numer. Heat Transfer 6 441 461 1983
- Tauscher R. Mayinger F. Heat Transfer Enhancement in a Plate Heat Exchanger with Rib-Roughened Surfaces Heat Transfer Enhancement of Heat Exchangers, NATO ASI Series, Serie E: Applied Sciences 355 Kluwer Academic Publishers Dordrecht Boston London 1999 207 221
- Djenidi L. Elavarasan R. Antonia R. A. The turbulent Boundary Layer over Transverse Square Cavities J. Fluid Mech. 395 271 294 1999
- Patera A. T. Mikić B. B. Exploiting Hydrodynamic Instabilities. Resonant Heat Transfer Enhancement Int. J. Heat Mass Transfer 29 1127 1138 1986
- Amon C. H. Mikic B. B. Numerical Prediction of Convective Heat Transfer in Self-Sustained Oscillatory Flows J. Thermophysics 4 239 246 1990
- Wang G. Vanka S. P. Convective Heat Transfer in Periodic Wavy Passages Int. J. Heat Mass Transfer 38 3219 3230 1995
- Iyer R. S. Kakac S. Fung K. Y. Instability and heat Transfer in Grooved Channel Flow Journal of Thermophysics and Heat Transfer 11 437 445 1997
- Han J. C. Glicksman L. R. Rohsenow W. M. An Investigation of Heat Transfer and Friction for rib-Roughened Surfaces Int. J. Heat Mass Transfer 21 1143 1156 1978
- Han J. C. Park J. S. Developing Heat Transfer in Rectangular Channels with Rib Turbulators Int. J. Heat Mass Transfer 31 183 195 1988
- Chandra P. R. Fontenot M. L. Han J. C. Effect of Rib Profiles on Turbulent Channel Flow Heat Transfer J. Thermophysics 12 116 118 1997
- Olsson C. O. Sunden B. Experimental Study of Flow and Heat Transfer in Rib-Roughened Rectangular Channel Experimental Thermal and Fluid Science 16 349 365 1998
- Sunden B. Heat Transfer and Flow in Rib-Roughened Rectangular Ducts Heat Transfer Enhancement of Heat Exchangers, NATO ASI Series, Serie E: Applied Sciences 355 Kluwer Academic Publishers Dordrecht Boston London 1999 123 139
- Sunden B. Flow and Heat Transfer Mechanisms in Plate and Frame Exchangers Heat Transfer Enhancement of Heat Exchangers, NATO ASI Series, Serie E: Applied Sciences 355 Kluwer Academic Publishers Dordrecht Boston London 1999 185 206
- Karwa R. Solanki S. C. Saini J. S. Heat Transfer Coefficient and Friction Factor Correlation for the Transitional Flow Regime in Rib-Roughened Rectangular Ducts Int. J. Heat Mass Transfer 42 1597 1615 1999
- Fodemski T. R. The Simulation of Flow and Heat Transfer in Channels with Ribbed Surface Transport Phenomena in Turbulent Flows, Theory, Experiment, and Numerical Simulation The University of Tokyo Hirata M. Kasai N. 605 618 1987
- Fodemski T. R. Collins M. A. Flow and Heat Transfer Simulations for 2- and 3-Dimensional Smooth and Ribbed Channels Proceedings of the Second UK National Heat Transfer Conference Glasgow 14-16 September 1988
- Fodemski T. R. The Performance Analysis of a Ribbed Channel Based on Computer Simulation of Flow and Heat Transfer June 15-17 1989 Firenze, Italy
- Valujeva E.P. Popov B.N. Romanova S.J. “Teplootdacha pri turbulentnom pulsiruyushchem techenii v krugloj trube” 3 24 35 1994
- Genin L.G. Koval A.P. Manczha S.P. Sviridov V.G. “Gidrodinamika i teploobmen pri pulsiruyushchem techenii zhidkosti v trubakh” 5 30 34 1992
- Park J.S. Taylor M.F. Eligot D.M. “Heat transfer to pulsating turbulent gas flow” Proc. 7 th Int. Heat Transfer Conf. 3 105 110 1982